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to push it to the limit. to see how far you can go with something without getting caught.
Whoa she pushes the envelope in her risque music videos.
"stretch the limits" - to go further (in any field) than anyone or any group has done before. perhaps doing something that wasn't previously thought possible.
dude, that quadruple-backflip double-twist one-handed going backwards while blindfolded and sucking a lolly (deep breath) surf manoeuvre was really pushing the envelope.
by Smiff November 03, 2003
To outdistance everyone else in an activity - set a new standard or precedent
by Anonymous November 03, 2003